System, device, and method for monitoring abnormal state of pipe

Abstract

The present application relates to a system, device, and method for monitoring an abnormal state of pipe, which monitors whether a pipe is abnormal. In the present application, a pipe state signal input from each signal acquisition part is divided into a plurality of time periods, and then it is determined whether an abnormal state signal exists in the pipe state signal in each of the time periods. Therefore, the present application enables determination with higher accuracy of whether the pipe is abnormal, compared to the case of determining whether an abnormal state signal exists in a pipe state signal which has not been divided into a plurality of time periods.

1 . A system for monitoring an abnormal state of pipe comprising:
 a plurality of sensor parts positioned at a distance apart from each other and each configured to detect a pipe state signal, which is a signal indicating a state of the pipe;   a plurality of signal acquisition parts positioned at a distance apart from each other and each configured to acquire the pipe state signal detected by each of the sensor parts; and   a device for monitoring an abnormal state of pipe configured to monitor whether the pipe is abnormal,   wherein the device for monitoring an abnormal state of pipe includes an input part that receives the pipe state signal from each of the plurality of signal acquisition parts,   a signal division part that divides the pipe state signal input through the input part into a plurality of preset time periods, and   a monitoring part that determines whether an abnormal state signal is present in each of the pipe state signals received from two signal acquisition parts among the plurality of signal acquisition parts in each of the plurality of time periods and, when it is determined that the abnormal state signal is present in each of the pipe state signals received from the two signal acquisition parts, determines that the pipe is abnormal.   
     
     
         2 . The system for monitoring an abnormal state of pipe of  claim 1 , wherein each of the signal acquisition parts receives a Global Positioning System (GPS) signal through a GPS antenna and matches the GPS signal with the pipe state signal detected by each of the sensor parts,
 the input part receives the pipe state signal matched with the GPS signal from each of the signal acquisition parts, and   the device for monitoring an abnormal state of pipe further includes a synchronization part that performs time synchronization between the pipe state signals received from each of the signal acquisition parts using the pipe state signal matched with the GPS signal.   
     
     
         3 . The system for monitoring an abnormal state of pipe of  claim 2 , wherein the synchronization part is configured to linearly interpolate the GPS signal and match the linearly interpolated GPS signal with the pipe state signal received from each of the signal acquisition part, and
 performs time synchronization between the pipe state signals received from each of the signal acquisition parts further using the pipe state signal matched with the linearly interpolated GPS signal.   
     
     
         4 . The system for monitoring an abnormal state of pipe of  claim 1 , wherein an overlapping time period is present between the plurality of preset time periods. 
     
     
         5 . The system for monitoring an abnormal state of pipe of  claim 1 , wherein the monitoring part calculates a coherence function value representing a degree of similarity between the pipe state signals received from the two signal acquisition parts in each of the plurality of time periods, and
 when the coherence function value is greater than or equal to a coherence function reference value preset in the monitoring part, determines that the abnormal state signal is present in each of the pipe state signals received from the two signal acquisition parts.   
     
     
         6 . The system for monitoring an abnormal state of pipe of  claim 1 , wherein the monitoring part calculates a kurtosis function value of each of the pipe state signals received from the two signal acquisition parts in each of the plurality of time periods, and
 when each kurtosis function value is greater than a kurtosis function reference value preset in the monitoring part, determines that the abnormal state signal is present in each of the pipe state signals received from the two signal acquisition parts.   
     
     
         7 . The system for monitoring an abnormal state of pipe of  claim 1 , wherein the monitoring part calculates a kurtosis function value of each of the pipe state signals received from the two signal acquisition parts in each of the plurality of time periods, and
 when a geometric mean value of the respective kurtosis function values is greater than or equal to a kurtosis function geometric mean reference value preset in the monitoring part, determines that the abnormal state signal is present in each of the pipe state signals received from the two signal acquisition parts.   
     
     
         8 . The system for monitoring an abnormal state of pipe of  claim 1 , wherein the monitoring part calculates a coherence function value representing a degree of similarity between the pipe state signals received from the two signal acquisition parts in each of the plurality of time periods,
 calculates a kurtosis function value of each of the pipe state signals received from the two signal acquisition parts in each of the plurality of time periods, and   when the coherence function value is greater than or equal to a coherence function reference value preset in the monitoring part and each kurtosis function value is greater than a kurtosis function reference value preset in the monitoring part, determines that the abnormal state signal is present in each of the pipe state signals received from the two signal acquisition parts.   
     
     
         9 . The system for monitoring an abnormal state of pipe of  claim 1 , wherein the monitoring part calculates a coherence function value representing a degree of similarity between the pipe state signals received from the two signal acquisition parts in each of the plurality of time periods,
 calculates a kurtosis function value of each of the pipe state signals received from the two signal acquisition parts in each of the plurality of time periods, and   when the coherence function value is greater than or equal to a coherence function reference value preset in the monitoring part and a geometric mean value of the respective kurtosis function values is greater than or equal to a kurtosis function geometric mean reference value preset in the monitoring part, determines that the abnormal state signal is present in each of the pipe state signals received from the two signal acquisition parts.   
     
     
         10 . A device for monitoring an abnormal state of pipe comprising:
 an input part configured to receive a pipe state signal, which is a signal indicating a state of the pipe, from each of a plurality of signal acquisition parts;   a signal division part configured to divide the pipe state signal input through the input part into a plurality of preset time periods; and   a monitoring part configured to determine whether an abnormal state signal is present in each of the pipe state signals received from two signal acquisition parts among the plurality of signal acquisition parts in each of the plurality of time periods and when it is determined that the abnormal state signal is present in each of the pipe state signals received from the two signal acquisition parts, determine that the pipe is abnormal.   
     
     
         11 . A method for monitoring an abnormal state of pipe comprising:
 a signal inputting operation of receiving a pipe state signal, which is a signal indicating a state of the pipe, from each of a plurality of signal acquisition parts;   a signal division operation of dividing the pipe state signal input through the signal inputting operation into a plurality of preset time periods; and   a monitoring operation of determining whether an abnormal state signal is present in each of the pipe state signals received from two signal acquisition parts among the plurality of signal acquisition parts in each of the plurality of time periods and when it is determined that the abnormal state signal is present in each of the pipe state signals received from the two signal acquisition parts, determining that the pipe is abnormal.   
     
     
         12 . The method for monitoring an abnormal state of pipe of  claim 11 , wherein, in the signal inputting operation, the pipe state signal matched with a Global Positioning System (GPS) signal is received from each signal acquisition part, and
 the method for monitoring an abnormal state of pipe further includes, after the signal inputting operation and before the signal division operation, a synchronization operation of performing time synchronization between the pipe state signals received from the respective signal acquisition parts using the pipe state signal matched with the GPS signal.   
     
     
         13 . The method for monitoring an abnormal state of pipe of  claim 12 , wherein, in the synchronization operation, the GPS signal is linearly interpolated and the linearly interpolated GPS signal is matched with the pipe state signal received from each signal acquisition part, and
 the time synchronization is performed between the pipe state signals received from the respective signal acquisition parts further using the pipe state signal matched with the linearly interpolated GPS signal.   
     
     
         14 . The method for monitoring an abnormal state of pipe of  claim 11 , wherein an overlapping time period is present between the plurality of preset time periods. 
     
     
         15 . The method for monitoring an abnormal state of pipe of  claim 11 , wherein, in the monitoring operation, a coherence function value representing a degree of similarity between the pipe state signals received from the two signal acquisition parts is calculated in each of the plurality of time periods, and
 when the coherence function value is greater than or equal to a preset coherence function reference value, it is determined that the abnormal state signal is present in each of the pipe state signals received from the two signal acquisition parts.   
     
     
         16 . The method for monitoring an abnormal state of pipe of  claim 11 , wherein, in the monitoring operation, a kurtosis function value of each of the pipe state signals received from the two signal acquisition parts is calculated in each of the plurality of time periods, and
 when each kurtosis function value is greater than a preset kurtosis function reference value, it is determined that the abnormal state signal is present in each of the pipe state signals received from the two signal acquisition parts.   
     
     
         17 . The method for monitoring an abnormal state of pipe of  claim 11 , wherein, in the monitoring operation, a kurtosis function value of each of the pipe state signals received from the two signal acquisition parts is calculated in each of the plurality of time periods, and
 when each of a geometric mean value of the respective kurtosis function values is greater than or equal to a preset kurtosis function geometric mean reference value, it is determined that the abnormal state signal is present in each of the pipe state signals received from the two signal acquisition parts.   
     
     
         18 . The method for monitoring an abnormal state of pipe of  claim 11 , wherein, in the monitoring operation, a coherence function value representing a degree of similarity between the pipe state signals received from the two signal acquisition parts is calculated in each of the plurality of time periods,
 a kurtosis function value of each of the pipe state signals received from the two signal acquisition parts is calculated in each of the plurality of time periods, and   when the coherence function value is greater than or equal to a preset coherence function reference value and each kurtosis function value is greater than a preset kurtosis function reference value, it is determined that the abnormal state signal is present in each of the pipe state signals received from the two signal acquisition parts.   
     
     
         19 . The method for monitoring an abnormal state of pipe of  claim 11 , wherein, in the monitoring operation, a coherence function value representing a degree of similarity between the pipe state signals received from the two signal acquisition parts is calculated in each of the plurality of time periods,
 a kurtosis function value of each of the pipe state signals received from the two signal acquisition parts is calculated in each of the plurality of time periods, and   when the coherence function value is greater than or equal to a preset coherence function reference value and a geometric mean value of the respective kurtosis function values is greater than or equal to a preset kurtosis function geometric mean reference value, it is determined that the abnormal state signal is present in each of the pipe state signals received from the two signal acquisition parts.